diff --git a/sysdeps/stub/open.c b/sysdeps/stub/open.c
index 6e4dc655..f269292e 100644
--- a/sysdeps/stub/open.c
+++ b/sysdeps/stub/open.c
@@ -23,6 +23,7 @@
    Boston, MA 02111-1307, USA.
 */
 
+#include <glibtop.h>
 #include <glibtop/open.h>
 
 /* Opens pipe to gtop server. Returns 0 on success and -1 on error. */